US2807012A - Transfusion monitoring device - Google Patents
Transfusion monitoring device Download PDFInfo
- Publication number
- US2807012A US2807012A US360140A US36014053A US2807012A US 2807012 A US2807012 A US 2807012A US 360140 A US360140 A US 360140A US 36014053 A US36014053 A US 36014053A US 2807012 A US2807012 A US 2807012A
- Authority
- US
- United States
- Prior art keywords
- flow
- drops
- microphone
- monitoring device
- patient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
- A61M5/1689—Drip counters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/13—Infusion monitoring
Definitions
- This invention relates to a device for monitoring transfusions given to a patient, and other surgical procedures carried out in a similar manner.
- the invention described herein is not however restricted in its use to surgical applications, but is capable of wider use in industrial techniques where it is desired to monitor the flow of fluids.
- time is not important, and the liquid is allowed to flow to the patient at any convenient rate, but in other transfusions timing is very important, and it is to the latter class of cases that this invention is particularly directed.
- the present invention is particularly useful in detecting any sudden changes in the rate of flow to a patient, such as might be caused by the transfusion device suddenly getting out of adjustment.
- An additional object is to provide a device constructed of parts which are easily obtainable and low in cost.
- a further object of this invention is to provide a device wherein the flow of liquid to the patient may be observed or otherwise indicated at a distance remote from the patient without the necessity of any complicated apparatus.
- a preferred embodiment of the invention may consist briefly of a means for allowing the blood or other liquid to fall in the form of drops as it passes to the patient, and in combination therewith, a sound-sensing means whereby the sound of such drops falling may be remotely observed, through suitable amplifying and indication means.
- Figure 1 shows a general view of a preferred form of the device in use
- Figure 2 shows an enlarged fragmentary cross-sectional 2,807,012 Patented Sept. 17, 1957 view of the device with the electrical parts shown schematically.
- a supply bottle is shown at 1 from which blood or other liquid flows to the patient.
- Supply bottle 1 is connected by tube 2 to tube 3 whence connection is made to the patient.
- Tube 3 has an enlarged portion shown at 4, and within the latter there is provided a nozzle shown at 5.
- a tap 6 controls the flow to nozzle 5. It is apparent from the accompanying drawing that tap 6 may be adjusted so that the liquid in question may be caused to fall in drops in the enlarged portion 4 of tube 3. Such drops are denoted by 8.
- a microphone shown at 9 is accordingly attached to enlarged portion 4 of tube 3 in any suitable manner. It is not considered desirable that microphone 9 be made integral with enlarged portion 4 because of the difliculties of sterilizing such a composite device, but the invention is in no way limited to such attachable construction. It is also contemplated that the microphone may be attached to the enlarged portion 4 by means of a soundtransmitting tube, in the manner of a stethoscope.
- the microphone 9 may be used by the patient to communicate vocally through the loudspeaker referred to below.
- Microphone 9 is connected to amplifier 10 by means of a suitable connection which is indicated by 11.
- a loudspeaker shown at 12 could be attached to amplifier 10 by means of a suitable connection shown at 13.
- transfusion invention is not limited to the use of a loud speaker or any sound producing means, and, for example a light could be easily provided instead of loud speaker 12, the flashes of which light would indicate the falling of drops in enlarged por-' tion 4.
- Another indicating means which can be used is a counter, which is shown at 14, capable of being attached to amplifier 10 by means of connection 15.
- the sound impulses picked up by microphone 9 may be converted into electrical impulses which in turn move a suitable hand to indicate the number of drops falling during a given period.
- rate of flow indicator could be provided as will be understood by one skilled in the art.
- a transfusion monitoring device for monitoring the flow of liquid drops comprising a splash chamber, a microphone attached to said splash chamber capable of sensing splashes occuring in said splash chamber due to said liquid drops, an amplifier connected to said microphone and indicating means connected to said amplifier whereby the indicating means is indicative of the presence or absence of the flow of liquid drops within said chamber.
- a transfusion monitoring device for monitoring the flow of liquid drops comprising a splash chamber, a microphone in close proximity to said splash chamber capable of sensing splashes in said splash chamber due to said liquid drops, an amplifier connected to said microphone and indicating means connected to said amplifier whereby the indicating means is indicative of the presence or absence of the flow of liquid drops within said chamber.
- a transfusion monitoring device for monitoring the flow of liquid drops comprising a splash chamber, indicating means, means for sensing sound impulses occuring in said splash chamber and occuring in response to the flow of liquid drops therein, and means for applying signals generated by said sensing means to said indicating means, whereby the indicating means is indicative of the presence or absence of the flow of liquid drops within said chamber.
Description
2083 REFERENCE m 2,807 013 SEARCH RUUM Sept. 17, 1957 2,807,012
H. SCHWARZ TRANSFUSION MONITORING DEVICE Filed June 8, 1953 AMPLIFIER fihbeflt 6 0726065716 2807012 2 OR IN 340/23?? United States Patent '9 M TRANSFUSION MONITORING DEVICE Herbert Schwarz, Woodrolfe, Ontario, Canada Application June 8, 1953, Serial No. 360,140
3 Claims. (Cl. 340-239) This invention relates to a device for monitoring transfusions given to a patient, and other surgical procedures carried out in a similar manner. The invention described herein is not however restricted in its use to surgical applications, but is capable of wider use in industrial techniques where it is desired to monitor the flow of fluids.
In some transfusions, time is not important, and the liquid is allowed to flow to the patient at any convenient rate, but in other transfusions timing is very important, and it is to the latter class of cases that this invention is particularly directed. Specifically the present invention is particularly useful in detecting any sudden changes in the rate of flow to a patient, such as might be caused by the transfusion device suddenly getting out of adjustment.
Heretofore it has been the practice during transfusions to have a nurse inspect the various patients from time to time, to determine whether the flow is proceeding at the proper rate, by counting drops in a visible portion of the apparatus for a short interval of time.
Such a method is exceedingly disadvantageous because of the great amount of supervsion required.
It is a principal object of this invention to overcome the principal disadvantages referred to above by providing a device which requires a minimum of supervision.
It is a further object to provide a device which is convenient for use in hospitals and is particularly advantageous from the standpoint of sterilization because of its separable structure wherein the parts requiring sterilization are easily separated from those not requiring to be sterilized.
An additional object is to provide a device constructed of parts which are easily obtainable and low in cost.
A further object of this invention is to provide a device wherein the flow of liquid to the patient may be observed or otherwise indicated at a distance remote from the patient without the necessity of any complicated apparatus.
It is also an object to provide for a plurality of transfusions to be monitored simultaneously by a single nurse or orderly, with the assistance of the device described herein.
Other objects of the present invention will be apparent to one skilled in the art from an examination of the present specification and the accompanying drawings.
A preferred embodiment of the invention may consist briefly of a means for allowing the blood or other liquid to fall in the form of drops as it passes to the patient, and in combination therewith, a sound-sensing means whereby the sound of such drops falling may be remotely observed, through suitable amplifying and indication means.
In the accompanying drawing wherein like parts are denoted by identical reference numerals,
Figure 1 shows a general view of a preferred form of the device in use; and
Figure 2 shows an enlarged fragmentary cross-sectional 2,807,012 Patented Sept. 17, 1957 view of the device with the electrical parts shown schematically.
It will be appreciated that modifications are possible without departing from the scope of the invention.
In the accompanying drawing a supply bottle is shown at 1 from which blood or other liquid flows to the patient. Supply bottle 1 is connected by tube 2 to tube 3 whence connection is made to the patient.
As the drops 8 fall, they produce minute splashes which, While inaudible to the human car, may be sensed by means of a microphone. For this latter purpose, a microphone shown at 9 is accordingly attached to enlarged portion 4 of tube 3 in any suitable manner. It is not considered desirable that microphone 9 be made integral with enlarged portion 4 because of the difliculties of sterilizing such a composite device, but the invention is in no way limited to such attachable construction. It is also contemplated that the microphone may be attached to the enlarged portion 4 by means of a soundtransmitting tube, in the manner of a stethoscope.
In addition to its use for the purpose described, the microphone 9 may be used by the patient to communicate vocally through the loudspeaker referred to below.
Microphone 9 is connected to amplifier 10 by means of a suitable connection which is indicated by 11. A loudspeaker shown at 12 could be attached to amplifier 10 by means of a suitable connection shown at 13.
It should be understood that the transfusion invention is not limited to the use of a loud speaker or any sound producing means, and, for example a light could be easily provided instead of loud speaker 12, the flashes of which light would indicate the falling of drops in enlarged por-' tion 4.
Another indicating means which can be used is a counter, which is shown at 14, capable of being attached to amplifier 10 by means of connection 15.
When a counter is used, the sound impulses picked up by microphone 9 may be converted into electrical impulses which in turn move a suitable hand to indicate the number of drops falling during a given period.
It is also contemplated that a rate of flow indicator could be provided as will be understood by one skilled in the art.
It will be realized that the invention herein disclosed provides a simpler and more effective technique than found in the prior art, and has numerous advantages in the economy of construction and the reliability of the apparatus, which will be a considerable aid in surgery.
I claim:
1. A transfusion monitoring device for monitoring the flow of liquid drops comprising a splash chamber, a microphone attached to said splash chamber capable of sensing splashes occuring in said splash chamber due to said liquid drops, an amplifier connected to said microphone and indicating means connected to said amplifier whereby the indicating means is indicative of the presence or absence of the flow of liquid drops within said chamber. 2. A transfusion monitoring device for monitoring the flow of liquid drops comprising a splash chamber, a microphone in close proximity to said splash chamber capable of sensing splashes in said splash chamber due to said liquid drops, an amplifier connected to said microphone and indicating means connected to said amplifier whereby the indicating means is indicative of the presence or absence of the flow of liquid drops within said chamber.
3. A transfusion monitoring device for monitoring the flow of liquid drops comprising a splash chamber, indicating means, means for sensing sound impulses occuring in said splash chamber and occuring in response to the flow of liquid drops therein, and means for applying signals generated by said sensing means to said indicating means, whereby the indicating means is indicative of the presence or absence of the flow of liquid drops within said chamber.
References Cited in the file of this patent UNITED STATES PATENTS Harris May 21, 1935 Hardinge Mar. 25, 1941 Greacen, et a1. Jan. 4, 1955 FOREIGN PATENTS Switzerland Oct. 1, 1938 Germany Feb. 18, 1925
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US360140A US2807012A (en) | 1953-06-08 | 1953-06-08 | Transfusion monitoring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US360140A US2807012A (en) | 1953-06-08 | 1953-06-08 | Transfusion monitoring device |
Publications (1)
Publication Number | Publication Date |
---|---|
US2807012A true US2807012A (en) | 1957-09-17 |
Family
ID=23416760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US360140A Expired - Lifetime US2807012A (en) | 1953-06-08 | 1953-06-08 | Transfusion monitoring device |
Country Status (1)
Country | Link |
---|---|
US (1) | US2807012A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2904033A (en) * | 1957-03-04 | 1959-09-15 | Sylvan M Shane | Breathing indicator |
DE1145307B (en) * | 1958-11-21 | 1963-03-14 | Galasyn Inc | Device for intravenous continuous drip infusions |
US3158163A (en) * | 1959-12-24 | 1964-11-24 | Phillips Petroleum Co | Flow control process and apparatus |
US3163176A (en) * | 1962-03-14 | 1964-12-29 | Barth Engineering And Mfg Comp | Apparatus for sensing and controlling fluid flow in the form of discrete free-falling drops |
US3224252A (en) * | 1963-06-17 | 1965-12-21 | Hewlett Packard Co | Leak testing |
US3390577A (en) * | 1965-09-24 | 1968-07-02 | Gen Instrument Corp | Monitoring system for fluid flow in drop form |
US3667213A (en) * | 1970-12-11 | 1972-06-06 | Measurement Science Corp | Pulse, respiration and intravenous rate counter |
US3738361A (en) * | 1971-09-20 | 1973-06-12 | M Price | Control device for parenteral liquid feed apparatus |
US4168707A (en) * | 1977-06-13 | 1979-09-25 | Douvas Nicholas G | Control apparatus for microsurgical instruments |
US4383252A (en) * | 1980-11-24 | 1983-05-10 | Purcell Harold F | Intravenous drip feed monitor |
US4775368A (en) * | 1986-02-19 | 1988-10-04 | Pfrimmer-Viggo Gmbh & Co. Kg | Infusion device |
US4869722A (en) * | 1988-01-20 | 1989-09-26 | Measurement Resources Inc. | Flow monitor of liquid drops |
US5125268A (en) * | 1991-07-08 | 1992-06-30 | The United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for acoustically measuring rainfall |
US5154704A (en) * | 1990-10-31 | 1992-10-13 | Kent Archibald G | IV clamp with tube clip |
US5254102A (en) * | 1991-08-23 | 1993-10-19 | Genshiro Ogawa | Apparatus for controlling the rate of dripping of intravenous fluid |
US5906598A (en) * | 1993-12-22 | 1999-05-25 | Baxter International Inc. | Self-priming drip chamber with extended field of vision |
US20080188813A1 (en) * | 2004-10-21 | 2008-08-07 | Nova Nordisk A/S | Injection Device with a Processor for Collecting Ejection Information |
US20090069742A1 (en) * | 2006-03-20 | 2009-03-12 | Andre Larsen | Electronic Module for Mechanical Medication Delivery Devices |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE410079C (en) * | 1922-11-25 | 1925-02-18 | Ernst Remmert | Method and device for the detection of leaky valves, flanges or other connection points in pipes under pressure |
US2002008A (en) * | 1933-05-25 | 1935-05-21 | Benjamin Howard Benson | Apparatus for blood transfusion |
CH198839A (en) * | 1937-10-30 | 1938-07-15 | Alois Schuler | Device for introducing liquid substances into the human or animal body. |
US2235928A (en) * | 1939-01-04 | 1941-03-25 | Hardinge Co Inc | Apparatus for and method for controlling grinding devices |
US2698929A (en) * | 1952-01-25 | 1955-01-04 | Combustion Eng | Flow stoppage indicator for mill fuel supply |
-
1953
- 1953-06-08 US US360140A patent/US2807012A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE410079C (en) * | 1922-11-25 | 1925-02-18 | Ernst Remmert | Method and device for the detection of leaky valves, flanges or other connection points in pipes under pressure |
US2002008A (en) * | 1933-05-25 | 1935-05-21 | Benjamin Howard Benson | Apparatus for blood transfusion |
CH198839A (en) * | 1937-10-30 | 1938-07-15 | Alois Schuler | Device for introducing liquid substances into the human or animal body. |
US2235928A (en) * | 1939-01-04 | 1941-03-25 | Hardinge Co Inc | Apparatus for and method for controlling grinding devices |
US2698929A (en) * | 1952-01-25 | 1955-01-04 | Combustion Eng | Flow stoppage indicator for mill fuel supply |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2904033A (en) * | 1957-03-04 | 1959-09-15 | Sylvan M Shane | Breathing indicator |
DE1145307B (en) * | 1958-11-21 | 1963-03-14 | Galasyn Inc | Device for intravenous continuous drip infusions |
US3158163A (en) * | 1959-12-24 | 1964-11-24 | Phillips Petroleum Co | Flow control process and apparatus |
US3163176A (en) * | 1962-03-14 | 1964-12-29 | Barth Engineering And Mfg Comp | Apparatus for sensing and controlling fluid flow in the form of discrete free-falling drops |
US3224252A (en) * | 1963-06-17 | 1965-12-21 | Hewlett Packard Co | Leak testing |
US3390577A (en) * | 1965-09-24 | 1968-07-02 | Gen Instrument Corp | Monitoring system for fluid flow in drop form |
US3667213A (en) * | 1970-12-11 | 1972-06-06 | Measurement Science Corp | Pulse, respiration and intravenous rate counter |
US3738361A (en) * | 1971-09-20 | 1973-06-12 | M Price | Control device for parenteral liquid feed apparatus |
US4168707A (en) * | 1977-06-13 | 1979-09-25 | Douvas Nicholas G | Control apparatus for microsurgical instruments |
US4383252A (en) * | 1980-11-24 | 1983-05-10 | Purcell Harold F | Intravenous drip feed monitor |
US4775368A (en) * | 1986-02-19 | 1988-10-04 | Pfrimmer-Viggo Gmbh & Co. Kg | Infusion device |
US4869722A (en) * | 1988-01-20 | 1989-09-26 | Measurement Resources Inc. | Flow monitor of liquid drops |
US5154704A (en) * | 1990-10-31 | 1992-10-13 | Kent Archibald G | IV clamp with tube clip |
US5125268A (en) * | 1991-07-08 | 1992-06-30 | The United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for acoustically measuring rainfall |
US5254102A (en) * | 1991-08-23 | 1993-10-19 | Genshiro Ogawa | Apparatus for controlling the rate of dripping of intravenous fluid |
US5906598A (en) * | 1993-12-22 | 1999-05-25 | Baxter International Inc. | Self-priming drip chamber with extended field of vision |
US20080188813A1 (en) * | 2004-10-21 | 2008-08-07 | Nova Nordisk A/S | Injection Device with a Processor for Collecting Ejection Information |
US10383996B2 (en) | 2004-10-21 | 2019-08-20 | Novo Nordisk A/S | Injection device with a processor for collecting ejection information |
US11318251B2 (en) | 2004-10-21 | 2022-05-03 | Novo Nordisk A/S | Injection device with a processor for collecting ejection information |
US20090069742A1 (en) * | 2006-03-20 | 2009-03-12 | Andre Larsen | Electronic Module for Mechanical Medication Delivery Devices |
US9101723B2 (en) * | 2006-03-20 | 2015-08-11 | Novo Nordisk A/S | Electronic module for mechanical medication delivery devices |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2807012A (en) | Transfusion monitoring device | |
US3319623A (en) | Blood pressure monitors | |
US3796213A (en) | Perfusion monitor | |
WO2006060248A3 (en) | Pressure and temperature monitoring balloon catheter | |
FR2834628B1 (en) | PATIENT MONITORING APPARATUS AND METHOD WITH NON-INVASIVE HEART RATE MONITORING | |
ATE401930T1 (en) | PERMANENTLY IMPLANTABLE SYSTEM FOR THE DETECTION, DIAGNOSIS AND TREATMENT OF CONGENITAL HEART DEFECTS | |
DK377789D0 (en) | PLANT TO FEEL INTRAVASCULAR BLOOD GAS | |
US4184485A (en) | Measuring arrangement for decreasing the emotional influence on instrumental diagnostical measurements | |
JP2005040518A (en) | Access trouble detection system in dialysis | |
JP6465622B2 (en) | Measuring apparatus and program | |
US3646931A (en) | Portable battery-powered instrument for visualizing the peripheral pulse waveform and pulse rate | |
DE59506369D1 (en) | PORTABLE MEDICAL MEASURING AND DIAGNOSTIC DEVICE | |
US3633568A (en) | Automatically operating apparatus for measuring blood pressure | |
CN106037717A (en) | Special electrocardiograph monitoring apparatus for pediatric nursing | |
JP2002125953A (en) | Instrument for measuring breath and pulse and home health management system using the same | |
US20090054736A1 (en) | Method and system for a patient monitoring alarm | |
EP3570287A3 (en) | Wearable medical (wm) system monitoring ecg signal of ambulatory patient for heart condition | |
FR2384482A1 (en) | Sensor for monitoring intracranial pressure - has gas capsule with membrane contacting skull outer membrane to control pressure transducer | |
CN209173107U (en) | A kind of transfusion drip speed alarm | |
GB2046969A (en) | Respiration monitoring apparatus | |
US3541590A (en) | Physiological pulse meter | |
CN219021222U (en) | Electrocardiogram monitor with volume noise adjustment | |
JPH04335399A (en) | Voice output device equipped with automatic sound volume control function | |
JPS62253032A (en) | Relax degree detector | |
JP3198194U (en) | Biological measuring device |